2FA methods supported by Proton
Adding two-factor authentication is one of the most effective ways to protect your Proton account. With TOTP support, you can generate Proton verification codes directly in the Authenticator App.
Authenticator app (TOTP)
Proton lets you use time-based one-time passwords, so you can generate verification codes in an authenticator app on your device — no network or SMS needed.
Security key (U2F)
Proton works with hardware security keys using the U2F/FIDO standard.
TOTP must be enabled to use a hardware token.
Proton 2FA — Frequently asked questions
Does Proton support an authenticator app?
Yes. Proton supports time-based one-time passwords (TOTP), so you can add it to the Authenticator App and generate verification codes right on your device.
Which two-factor authentication methods does Proton support?
Proton currently supports: Authenticator app (TOTP), Security key (U2F).
Is it free to generate Proton codes with the Authenticator App?
Yes. The Authenticator App is free to download, and generating Proton verification codes does not require an account or sign-up.
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